From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8AF612DFF06; Tue, 17 Jun 2025 15:47:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750175232; cv=none; b=Yrhqm5l1VzWlacVnk0YNaUXrT5pVkHRp5zsLNK2r1Sl3RsQqAaoYyUwzjng1fobdcOxaT67n79NJcrEnzbNjw+ov8PQ4MuXA2mkTKIog/DgSJnPtcmpEDSrL5Cu47zQtu4LtduiqUd2TeAlW4i0+GQR4UizZejGnjJzq/FsZuI0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750175232; c=relaxed/simple; bh=2LxLBFwOE6WO88ls9/pzF81em2DlmLs+Wm83WkRQT2E=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=kE9u7eZslGUgFs8U6M4c5/kHTMb/yCYh3DeMIAk3BVAmdZHu3fn1PCH48+obdkmbg02YJRJztorQNta2syV7dW9d7RhNziOzT5aBE7039sYTWtThQ6gXIWJTxlWpqZZWII1D/BCxdfSntaGWfH3LGgsH4HwdfzZ9AC69h1xPLR4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=UylLC26A; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="UylLC26A" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1D452C4CEE7; Tue, 17 Jun 2025 15:47:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1750175232; bh=2LxLBFwOE6WO88ls9/pzF81em2DlmLs+Wm83WkRQT2E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UylLC26AX8v9HJQMm7omcPthztE/wgdiBcb0iUMo6le1gQBzo1uYB5YkhMiSrd4IC Y26toRypgiT+xGyuGeZGSDzJbMuBDQprUJMXRQZUuyY3dHAHIqKAz5M4RjWoTKeHaw TFuHeepI2jDo/b/haJG67lw7CQbAMx9jZaRIqEZo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Alexander Shiyan , Alexandre Belloni , Sebastian Reichel , Sasha Levin Subject: [PATCH 6.15 065/780] power: reset: at91-reset: Optimize at91_reset() Date: Tue, 17 Jun 2025 17:16:13 +0200 Message-ID: <20250617152454.144892186@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250617152451.485330293@linuxfoundation.org> References: <20250617152451.485330293@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Alexander Shiyan [ Upstream commit 62d48983f215bf1dd48665913318101fa3414dcf ] This patch adds a small optimization to the low-level at91_reset() function, which includes: - Removes the extra branch, since the following store operations already have proper condition checks. - Removes the definition of the clobber register r4, since it is no longer used in the code. Fixes: fcd0532fac2a ("power: reset: at91-reset: make at91sam9g45_restart() generic") Signed-off-by: Alexander Shiyan Reviewed-by: Alexandre Belloni Link: https://lore.kernel.org/r/20250307053809.20245-1-eagle.alexander923@gmail.com Signed-off-by: Sebastian Reichel Signed-off-by: Sasha Levin --- drivers/power/reset/at91-reset.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/power/reset/at91-reset.c b/drivers/power/reset/at91-reset.c index 036b18a1f90f8..511f5a8f8961c 100644 --- a/drivers/power/reset/at91-reset.c +++ b/drivers/power/reset/at91-reset.c @@ -129,12 +129,11 @@ static int at91_reset(struct notifier_block *this, unsigned long mode, " str %4, [%0, %6]\n\t" /* Disable SDRAM1 accesses */ "1: tst %1, #0\n\t" - " beq 2f\n\t" " strne %3, [%1, #" __stringify(AT91_DDRSDRC_RTR) "]\n\t" /* Power down SDRAM1 */ " strne %4, [%1, %6]\n\t" /* Reset CPU */ - "2: str %5, [%2, #" __stringify(AT91_RSTC_CR) "]\n\t" + " str %5, [%2, #" __stringify(AT91_RSTC_CR) "]\n\t" " b .\n\t" : @@ -145,7 +144,7 @@ static int at91_reset(struct notifier_block *this, unsigned long mode, "r" cpu_to_le32(AT91_DDRSDRC_LPCB_POWER_DOWN), "r" (reset->data->reset_args), "r" (reset->ramc_lpr) - : "r4"); + ); return NOTIFY_DONE; } -- 2.39.5